Drip edge

ABSTRACT

A structurally robust roof drip edge system including a tail and an outer section contiguous with the tail. The tail includes a locally thin section nailable to a roof substrate. The outer section includes a bridging member connecting an inner footing and an outer footing. The outer footing includes a drip edge profile for directing the flow of water off of a roof. The inner footing is spaced from the outer footing by a suitable distance and configured to be placed against an eave as a positioning aid such that the drip edge can easily and reliably be installed with sufficient spacing for the installation of a fascia board behind the drip edge profile. The drip edge may be bendable to a user-selectable angle between the tail and the outer section to accommodate a range of roof pitches.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Application Ser. No. 62/471,255, filed Mar. 14, 2017, entitled “DRIP EDGE,” which is hereby incorporated by reference in its entirety and for all purposes.

BACKGROUND Field

The present disclosure generally relates to weather resistant barrier systems, and more specifically to drip edge systems and methods.

Description of the Related Art

A drip edge can be installed at roof edges to guide water runoff away from fascia boards along roof linings and/or otherwise improve water management properties of the roof. The drip edge is typically a sheet of elongate metal bent across its length. The upper portion of the drip edge is inserted under the first course of roof shingles and attached to the roof while the lower portion extends downwardly from the edge of the roof to protect the fascia from roof runoff Because the fascia boards are often installed after roofing is completed, drip edges are sometimes positioned too close to the eaves without leaving sufficient space for the fascia board to be installed behind the drip edge. The effectiveness of a drip edge may also be affected by the pitch of the roof. Drip edges designed for flat roofs do not function properly when installed on a high pitch roof and vice versa.

SUMMARY

The systems, methods, and devices described herein address one or more problems as described above and associated with current runoff water management systems. The systems, methods and devices described herein have innovative aspects, no single one of which is indispensable or solely responsible for their desirable attributes. Without limiting the scope of the claims, the summary below describes some of the advantageous features.

The present disclosure provides various embodiments of a universal drip edge that can be effectively installed and used to protect fascia boards from roof water runoff regardless of the roof pitch. The present disclosure also provides various embodiments of a drip edge that can be reliably installed on roofs with sufficient room for a fascia board despite being installed before the fascia is attached. The present disclosure also provides various embodiments of a drip edge configured to facilitate water coalescing so that scattering or splashing of roof runoff is significantly reduced. In some embodiments, the drip edge has a varying thickness configured to add stability and strength while improving the ease of installation. Enhanced strength may provide a more robust product for shipping, installation, and long-term performance following installation.

In one embodiment, a drip edge is described. The drip edge is configured to be installed to a substantially planar roof substrate comprising an upper surface and a side-facing surface. The drip edge includes a tail extending along the length of the drip edge, the tail comprising a lower end and an upper end thinner than the lower end, wherein the drip edge is coupleable to the upper surface of the roof substrate by driving one or more mechanical fasteners through the upper end of the tail such that the tail lies adjacent to the upper surface of the roof substrate; and an outer section contiguous with the tail at a lengthwise joint defining a roof angle corresponding to a roof pitch of the roof substrate, the outer section extending along the length of the drip edge and comprising an inner footing disposed proximal to the tail section, an outer footing disposed distal from the tail section, and a bridging member disposed between the inner footing and the outer footing such that the inner footing and the outer footing extend perpendicularly from a bottom side of the bridging member to form downward-facing c-shaped channel, wherein the joint comprises a bendably thin region disposed proximate the inner footing and the tail such that the roof angle is selectable by bending the tail relative to the bridging member along the bendably thin region, and wherein an inner surface of the inner footing lies adjacent to the side-facing surface of the roof substrate. The c-shaped channel is sized and shaped to accommodate installation of a fascia board having a substantially rectangular cross-section disposed at least partially within the c-shaped channel and fastened to the side-facing surface of the roof substrate. The tail is configured to accommodate installation of a roofing material coupled to the upper surface of the roof substrate wherein at least a portion of the roofing material lies adjacent to the upper surface and at least a portion of the roofing material lies adjacent to the tail of the drip edge such that at least a portion of the tail of the drip edge is disposed between the upper surface of the roof substrate and an underside of the roofing material.

In some embodiments, the outer footing of the drip edge comprises a top end contiguous with the bridging member and a bottom end opposite the top end, the bottom end comprising a lip extending outwardly at an angle of between 15 degrees and 60 degrees relative to the outer footing such that a liquid flowing downward along the outer footing is directed away from the fascia board.

In some embodiments, the drip edge includes a plurality of adjacent discrete drip edge sections having substantially identical cross sections, the drip edge sections disposed adjacently to form a drip edge extending along substantially the entire length of roof substrate.

In some embodiments, the c-shaped channel has a width of between 0.75 inch and 1 inch.

In another embodiment, a universal drip edge is described. The drip edge includes an outer section and a variable thickness tail section, both extending along the length of the drip edge. The upper end of the tail section is thinner than the lower end. The outer section is contiguous with the tail at a lengthwise joint defining a roof angle. The outer section comprises an inner footing disposed proximal to the tail section, an outer footing disposed distal from the tail section, and a bridging member disposed between the inner footing and the outer footing such that the inner footing and the outer footing extend perpendicularly from a bottom side of the bridging member. The joint comprises a bendably thin region disposed proximate the inner footing and the tail, wherein the roof angle is selectable by bending the tail relative to the bridging member along the bendably thin region. The inner footing comprises an inner surface proximate the tail, the inner surface configured to be placed against an end surface of a roof substrate to define a drip edge installation position. The bridging member, the inner footing, and the outer footing define a downward-facing channel configured to receive and partially surround a fascia board.

In some embodiments, the bridging member is oriented at an angle between 5 degrees and 30 degrees relative to the tail section.

In some embodiments, the bendably thin region comprises a lengthwise divot in a bottom surface of the joint.

In some embodiments, the upper end of the tail is configured to receive one or more mechanical fasteners for securing the drip edge to a roof substrate.

In some embodiments, the outer footing comprises a top end contiguous with the bridging member and a bottom end opposite the top end, the bottom end comprising a lip disposed at an angle relative to the outer footing.

In some embodiments, the lip is disposed at an angle between 15 degrees and 60 degrees relative to the outer footing.

In some embodiments, the bottom end terminates in a fillet, wherein an outer portion of the fillet has a radius of curvature larger than a radius of curvature of an inner portion of the fillet.

In some embodiments, the outer section and the tail comprise aluminum.

In some embodiments, the outer section and the tail are manufactured by extruding to form an integral drip edge system.

In some embodiments, the outer footing is configured to accommodate and direct a flow of water received from a roof.

In some embodiments, the inner footing, the outer footing, the bridging member, and the lower section of the tail have a thickness between ⅓ inch and ⅛ inch.

In another embodiment, a method of installing a drip edge on a roof substrate is described. The method includes providing a drip edge comprising a tail and an outer section having an inner footing, an outer footing, and a channel disposed between the inner footing and the outer footing, placing the drip edge against the roof substrate such that a bottom surface of the tail is adjacent and substantially parallel to an upper surface of the roof substrate and an inward-facing surface of the inner footing abuts a side-facing surface of the roof substrate, attaching the tail to the roof substrate by placing one or more mechanical fasteners through the tail and a portion of the roof substrate, and installing a fascia board within the channel.

In some embodiments, the tail and the outer section of the drip edge are contiguous at a joint having an angle adjustable by bending.

In some embodiments, the method further comprises determining a pitch of the roof substrate, and adjusting the angle of the joint based on the measured pitch before placing the drip edge against the roof substrate.

In some embodiments, the roof substrate comprises a roof sheathing.

In some embodiments, attaching the tail to the roof substrate comprises driving one or more nails through the tail and a portion of the roof substrate.

BRIEF DESCRIPTION OF THE DRAWINGS

Certain embodiments of the present disclosure will now be described, by way of example only, with reference to the accompanying drawings. From figure to figure, the same or similar reference numerals are used to designate similar components of an illustrated embodiment.

FIG. 1A is an isometric perspective view of a roof drip edge in accordance with an example embodiment.

FIG. 1B is a top view of the roof drip edge of FIG. 1A.

FIG. 1C is a bottom view of the roof drip edge of FIGS. 1A and 1B.

FIG. 1D is a side profile view of the roof drip edge of FIGS. 1A-1C.

FIG. 2A is an isometric perspective view of an example configuration of the roof drip edge depicted in FIGS. 1A-1D installed on a roof sheathing.

FIG. 2B is a side profile view of the installed configuration of FIG. 2A.

FIG. 2C is an isometric perspective view of the installed roof drip edge of FIGS. 2A and 2B after installation of roofing materials and a fascia.

FIG. 2D is a side profile view of the installed configuration of FIG. 2C.

FIG. 3A is an isometric perspective view of a roof drip edge in accordance with a second example embodiment.

FIG. 3B is a side profile view of the roof drip edge of FIG. 3A.

FIG. 4A is an isometric perspective view of a roof drip edge in accordance with a third example embodiment.

FIG. 4B is a side profile view of the roof drip edge of FIG. 4A.

FIG. 5A is an isometric perspective view of a roof drip edge in accordance with a fourth example embodiment.

FIG. 5B is a side profile view of the roof drip edge of FIG. 5A.

FIG. 6A is an isometric perspective view of a roof drip edge in accordance with a fifth example embodiment.

FIG. 6B is a side profile view of the roof drip edge of FIG. 6A.

FIG. 7A is an isometric perspective view of a roof drip edge in accordance with a sixth example embodiment.

FIG. 7B is a side profile view of the roof drip edge of FIG. 7A.

FIG. 8A is an isometric perspective view of a roof drip edge in accordance with a seventh example embodiment.

FIG. 8B is a side profile view of the roof drip edge of FIG. 8A.

FIG. 9 is a side profile view of a roof drip edge in accordance with a further example embodiment.

DETAILED DESCRIPTION

Although the present disclosure is described with reference to specific examples, it will be appreciated by those skilled in the art that the present disclosure may be embodied in many other forms. The embodiments discussed herein are merely illustrative and do not limit the scope of the present disclosure.

In the description which follows, like parts may be marked throughout the specification and drawings with the same or similar reference numerals. The drawing figures are not necessarily to scale and certain features may be shown exaggerated in scale or in somewhat generalized or schematic form in the interest of clarity and conciseness.

Generally described, this disclosure describes improved roof drip edges providing a variety of possible advantages over existing flashing systems. As will be described with reference to the figures, in some embodiments the drip edges described herein are advantageously configured to be installed by roofers so as to reliably provide sufficient space for a fascia board to be attached to the eave by a cladding installer. In certain aspects, the drip edges described herein may be structurally robust while being nailable to a roof sheathing or other building substrate. In a further advantage, some embodiments may be configured to be bendable at one or more bending locations and/or along one or more bending axes, such that identically manufactured drip edges may be customizable by an installer for use with roofs having different pitches. These and other advantages of various embodiments will be apparent from the description that follows.

FIGS. 1A-1D depict an example configuration of a drip edge 100 or section thereof in accordance with an example embodiment. The drip edge 100 includes an inner tail 110 and an outer section 120. The tail 110 includes a lower section 112 and an upper section 114 relatively thinner than the lower section 112, divided from the lower section 112 at an interface 116. The outer section 120 includes a c-shaped channel 122, defined generally by an inner footing 124, an outer footing 126, and a bridging member 128 disposed between the inner and outer footings 124, 126. The tail 110 is contiguous with the outer section 120 at an angled joint 130.

The drip edge 100 can comprise a metal, for example, aluminum, steel, or other suitable metal. The drip edge 100 can be formed in the profile depicted in FIG. 1D by any suitable metal working method, for example, extruding, rolling, bending, molding, or the like. In some embodiments, the drip edge 100 is made of extruded aluminum. Structural strength may be provided by using a relatively thick metal, for example, as compared to the thickness of conventional drip edge flashing. For example, the drip edge 100 depicted in FIGS. 1A-1D has a thickness of approximately 1/16″ (1.5875 mm) along the lower section 112 of the tail 110, and at the outer section 120. In other embodiments, the thickness of the drip edge 100 can be any suitable range, such as between 1/64″ and ⅛″ (between 0.396875 mm and 3.175 mm), between 1/32″ and 1/16″ (between 0.79375 mm and 1.5875 mm), or the like.

The drip edge 100 can be made in various sizes. For example, the width a of the tail (e.g., the distance between the angled joint 130 and a distal end of the tail 110) can be any suitable distance such as 2 inches (5.08 cm), 3 inches (7.62 cm), or longer. In another example, the length b of the drip edge 100 (e.g., the length of the drip edge 100 along the angled joint 130) can be less than 1 foot (less than 0.3048 m), 1 foot (0.3048 m), 2 feet (0.6096 m), 5 feet (1.524 m), 10 feet (3.048 m), or longer. In some embodiments, the drip edge 100 can be manufactured in a first length b which can be cut down to a shorter custom length by a drip edge installer based on the length of a section of roof edge to be covered. Where a relatively long roof edge is to be covered, a plurality of sections of drip edge 100 can be placed end-to-end to achieve a longer drip edge system. It will be appreciated that the various functions and advantages of the drip edges described herein can be achieved with relatively short and/or long drip edge sections.

To facilitate nailing of the relatively thick drip edge 100 to a roof sheathing or other building substrate, the upper section 114 of the tail 110 is relatively thinner than the lower section 112. In various embodiments the thickness of the upper section 114 can be thinner than the lower section 112 by approximately 10%, 25%, 40%, 50%, 75%, or any other suitable percentage or range of percentages, such as between 25% and 50%. For example, the upper section 114 of the tail 110 of the drip edge 100 is approximately 0.04 inches (1.016 mm) thick, approximately 36% thinner than the lower section 112. The thickness of the upper section 114 of the tail can be selected so as to be thin enough to be easily securable to a substrate by nails or other mechanical fasteners, and thick enough to retain a desired structural rigidity. The width c of the upper section 114 can be any suitable width. In some embodiments, the width c of the upper section 114 is selected so as to provide a sufficiently large thin area to receive one or more mechanical fasteners, without significantly reducing the strength or dimensional stability of the drip edge 100. For example, in some embodiments, the width c of the upper section 114 is between 0.375 inches (9.525 mm) and 0.75 inches (19.05 mm). In one embodiment, the width c of the upper section is approximately 0.44 inches (11.176 mm).

The interface 116 between the upper section 114 and lower section 112 of the tail 110 can be a stepwise transition between the two metal thicknesses, or can be chamfered to provide a more gradual transition between the thickness of the upper section 114 and the thickness of the lower section 112. In the example drip edge 100 of FIG. 1D, the interface 116 is a stepwise transition. The angle of the chamfer can be selected so as to prevent the pooling of water behind the interface 116. For example, the chamfer angle may be approximately equal to or greater than the angle of the joint 130 such that the surface of the interface 116 is downward-sloping when installed on an angled building surface.

The outer section 120 of the drip edge 110 is configured to extend and carry draining water away from an edge of a roof surface. The inner footing 124 extends downward from the bridging member 128 to serve as a guide for placement of the drip edge 100 against an eave of a roof. In various embodiments, the length of the inner footing 124 can be any suitable length such as between 0.1″ and 1″ (between 2.54 mm and 25.4 mm), between 0.1″ and 0.5″ (between 2.54 mm and 12.7 mm), or the like. For example, the inner footing 124 of the drip edge 100 is approximately 0.25″ (6.35 mm). In some embodiments, the inner footing may be substantially longer than 1″ (25.4 mm).

The outer footing 126 is longer than the inner footing so as to guide draining water to a height substantially lower than the top edge of a fascia board installed within the c-shaped channel 122. In various embodiments, the length of the outer footing 126 can be any suitable length such as between 0.5″ and 6″ (between 12.7 mm and 152.4 mm), between 1″ and 5″ (between 25.4 mm and 127 mm), or the like. For example, the outer footing 126 of the drip edge 100 is approximately 1.25″ (31.75 mm).

At least a portion of the outer footing 126 can be an angled section 127 or lip configured to further guide water away from the roof edge. The angled section 127 is located at a distal end of the outer footing 126 and disposed at an angle relative to the vertically oriented proximal portion of the outer footing 126. In various embodiments the angle can be between 15 and 60 degrees so as to direct water away from the side of a building while continuing to facilitate the downward flow of water along the outer footing 126. For example, the angled portion 127 of the drip edge 100 depicted is angled at approximately 45 degrees relative to the remainder of the outer footing 126.

In some embodiments, the end of the angled section 127 of the outer footing 126 is further shaped so as to facilitate the coalescence of water at the end of the drip edge 100. As shown in FIG. 1D, the angled section 127 terminates in an upper fillet 127 a and a lower fillet 127 b . The upper fillet 127 a can have a larger radius of curvature than the lower fillet 127 b . For example, the radius of curvature of the upper fillet 127 a can be larger than the radius of curvature of the lower fillet 127 b by a factor of 1.25, 1.5, 2, 3, or greater.

Thus, the inner footing 124, outer footing 126, and bridging member 128 define the c-shaped channel 122. The width d of the c-shaped channel 122 is defined by the length of the bridging member 128. In various embodiments, the width d of the c-shaped channel 122 can be any width in the range of approximately 0.5″ (12.7 mm), 0.75″ (19.05 mm), 1″ (25.4 mm), or greater. In the drip edge 100 depicted in FIGS. 1A-1D, the width d of the c-shaped channel 122 is approximately 0.85″ (21.59 mm). Preferably, the width of the c-shaped channel 122 is at least slightly larger than the thickness of a fascia board to be installed. For example, the 0.85″ c-shaped channel 122 depicted in FIGS. 1A-1D is conveniently sized to accommodate a fascia board having a nominal thickness of 1 inch (e.g., dimensional lumber of nominal size 1×2, 1×4, 1×6, or the like, having an actual thickness of approximately 0.75″ or 19 mm), with a tolerance of approximately 0.1″ (2.54 mm).

A divot 135 is disposed along the lower surface of the tail 110 of the drip edge 100 behind the inner footing 124. The divot 135 is preferably located at or near the end of the tail 110, and may be directly adjacent to the inner footing 124. The divot 135 comprises a locally thinner region of the drip edge 100. For example, the divot 135 may be thinner than the adjacent portions of the drip edge 100 (e.g., the lower section 112 of the tail 110, the inner footing 124, and/or the bridging member 128) by approximately 10%, 25%, 40%, 50%, 75%, or any other suitable percentage. The thickness of the drip edge 100 at the divot 135 may be selected so as to be small enough to make the drip edge 100 locally bendable at the divot 135 along a bending axis parallel or substantially parallel to the length of the drip edge 100, while being large enough to provide a robust connection between the tail 100 and the outer section 120. Moreover, the divot 135 can facilitate bending of the drip edge 100 along a desired bending axis while preventing unwanted bending along other directions. In some embodiments, the thickness of the drip edge 100 at the divot 135 may be approximately equal to the thickness of the upper section 114 of the tail 110.

Referring now to FIGS. 2A-2D, a drip edge 200 is depicted as installed to a building substrate 250. The drip edge 200 installed in FIGS. 2A-2D can be any of the drip edges 100, 300, 400, 500, 600, 700, 800 depicted and described herein. The building substrate 250 can be an eave or a portion thereof, or any other upper structural portion of a building. For example, the building substrate 250 can include a rafter, a truss, or the like. In some embodiments, the substrate 250 is covered with a sheathing 255, such as oriented strand board, plywood, or the like. The substrate 250 and/or optional sheathing 255 can receive mechanical fasteners (e.g., nails or other fasteners) to secure the drip edge 200 and a roofing material 260 relative the substrate 250 and/or sheathing 255.

As shown in FIGS. 2A and 2B, the drip edge 200 can be secured to the sheathing 255 before a roofing material and fascia board (not shown in FIGS. 2A-2B) are installed. The drip edge 200 is positioned for installation by positioning the tail 210 against an upper surface 256 of the sheathing 255 or substrate 250 and positioning a back surface 225 of an inner footing 224 against a side-facing surface 257 of the sheathing 255 or substrate 250. When the drip edge 200 has been placed against the substrate 250 or sheathing 255, it can be secured in place by the use of mechanical fasteners, such as nails, which may be driven downward into the substrate 250 and/or sheathing 255 through the relatively narrow upper section 214 of the tail 210.

At any time before, during, or after installation of the drip edge 200 to the building substrate 250, the angle between the tail 210 and the outer section 220 can be adjusted based on the pitch of the roof by bending the drip edge 200 at the divot 235. For example, the angle can be adjusted such that, when the tail 210 is lying parallel to the sheathing 255, the bridging member 228 is oriented in a substantially horizontal direction and the inner and outer footings 224, 226 are oriented in a substantially vertical direction. The drip edge 200 may be bent at the divot 235 to the appropriate angle before installation based on a measurement of the pitch of the roof, or may be bent after installation based on an observed deviation from the desired final orientation of the outer section 220.

As shown in FIGS. 2C and FIGS. 2D, a roofing material 260 and a fascia board 265 can then be installed by securing to the substrate 250 and/or sheathing 255. The roofing material 260 can be any exterior roofing, for example, asphalt shingle, wood or other shingle, tile, membrane roofing, metal roofing, thatch, or the like. The roofing material 260 can be secured to the upper surface 256 by one or more mechanical fasteners such that the roofing material 260 at least partially covers the tail 210 of the drip edge 200, thereby directing water from the roof to be drained away from the building efficiently by the drip edge 200.

The fascia board 265, which can be wood, metal, plastic, or the like, is placed within the c-shaped channel 222 of the outer section 220 of the drip edge 200. The thickness of the fascia board 265 can be selected so as to fit within the c-shaped channel 222 of the drip edge 200. After the fascia board 265 is placed within the c-shaped channel 222, the fascia board 265 is secured to the side-facing surface 257 by one or more mechanical fasteners. In some aspects, the use of the inner footing 224 as a guide for positioning the drip edge 200 can thus allow a roofer to easily and efficiently install the drip edge 200 with sufficient space for the fascia board 265.

With reference to FIGS. 3A-8B, additional embodiments of the drip edges described herein will be described. Each embodiment of a drip edge 300, 400, 500, 600, 700, 800 depicted in FIGS. 3A-8B comprises a tail 310, 410, 510, 610, 710, 810, and an outer section 320, 420, 520, 620, 720, 820 including an inner footing 324, 424, 524, 624, 724, 824 and an outer footing 326, 426, 526, 626, 726, 826. Thus, drip edges 300, 400, 500, 600, 700, 800 can be installed to a building substrate in substantially the same manner as drip edges 100, 200 described above.

FIGS. 3A and 3B depict an alternate configuration of a drip edge 300 in which the bridging member 328 extends laterally beyond the outer footing 326. Accordingly, the outer end of the bridging member 328 is connected to the vertical portion of the outer footing 326 by a second angled section 329. In addition, the angled section 327 at the distal end of the outer footing 326 terminates in a flat profile, rather than the filleted profile depicted and described with references to FIGS. 1A-2D. In some embodiments, the drip edge 300 depicted in FIGS. 3A and 3B may be implemented with a filleted end profile.

FIGS. 4A and4B depict an alternative configuration of a drip edge 400 similar to the drip edge 300. In the configuration of FIGS. 4A and 4B, a distal section 428 a of the bridging member 428 extends at a relatively shallow downward angle, such as between 5 degrees and 20 degrees. The downward slope of the distal section 428 a of the bridging member 428 may further aid in facilitating drainage of water, as gravity may tend to pull water along the distal portion 428 a away from the building. In some embodiments, the drip edge 400 may be implemented with a filleted end profile. In some embodiments, the filleted profile can be formed by folding over the lower edge of the drip edge 400 in a manner such that the fold has a rounded profile.

FIGS. 5A and 5B depict an alternative configuration of a drip edge 500 similar to the drip edge 400, with a downward sloping distal section 528 a of a bridging member 528. In the configuration of FIGS. 5A and 5B, the tail 510 and bridging member 528 are substantially parallel, collinear, and/or coplanar. The drip edge 500 does not include a divot or other bendable feature. Thus, when manufacturing the drip edge 500, the angle between the inner and outer footings 524, 526 and the bridging member 528 may be selected to be compatible with a desired range of roof pitches. In addition, the tail 510 of the drip edge 500 has a substantially uniform thickness, and is depicted without a locally thinner section for accommodating mechanical fasteners passing through the tail 510. A tail 510 of uniform thickness may be used with chemical fastening means, and/or may be manufactured with apertures for receiving mechanical fasteners. It will be appreciated that the configuration of drip edge 500 may readily be implemented with a locally thin and nailable portion of the tail 510.

FIGS. 6A and 6B depict an alternative configuration of a drip edge 600 in which the outer footing 626 comprises an angled section 627 near the distal end of the outer footing 626, as well as a second vertical section 625 disposed distal to the angled section 627. In some aspects, the second vertical section 625 below the angled section 627 may function similarly to the filleted profiles described elsewhere herein to facilitate the coalescence of water traveling to the end of the angled section 627. Although the drip edge 600 depicted in FIGS. 6A and 6B does not include a divot, some embodiments of the drip edge 600 may equally include a divot or other bending feature so as to accommodate a larger range of roof pitches. Similarly, the outer footing 626 profile of FIGS. 6A and 6B may be implemented with the locally thin upper tail sections 114, 214 depicted in FIGS. 1A-2D.

FIGS. 7A and 7B depict an alternative configuration of a drip edge 700 generally similar to the drip edges 100, 200 depicted in FIGS. 1A-2D, without a divot or similar bending feature. As described with reference to FIGS. 5A and 5B, the angle between the tail 710 and the bridging member 728 can be predetermined based on the pitch of a particular roof and/or selected to be compatible with a particular range of roof pitches.

FIGS. 8A and 8B depict an alternative configuration of a drip edge 800 having an outer footing 826 with a profile generally similar to the outer footing 326 of the drip edge 300 depicted in FIGS. 3A and 3B. Unlike the drip edge 300 of FIGS. 3A and 3B, drip edge 800 does not include a divot and has a tail 810 of substantially uniform thickness, similar to the tails 510, 610 depicted in FIGS. 5A-6B.

FIG. 9 is a side profile view showing example dimensions of one embodiment of a drip edge having a side profile similar to the side profile of drip edge 100 depicted in FIGS. 1A-1D. In the embodiment shown in FIG. 9, the drip edge has a full width of 3.553 inches (90.2462 mm). The tail has a width of 2.390 inches (60.706 mm), of which the innermost 0.443 inches (11.2522 mm) comprise a narrowed upper end. The upper end has a thickness of 0.040 inches (1.016 mm), 38.5% thinner than the lower portion of the tail, which has a thickness of 0.065 inches (1.651 mm). The end of the outer footing has a filleted profile, with an upper radius of curvature of 0.040 inches (1.016 mm) and a lower radius of curvature of 0.020 inches (0.508 mm). The outer footing extends downward 1.242 inches (31.5468 mm) vertically from the bridging member. Other dimensions, angles, curvatures, and/or relationships between the various dimensions, angles, and/or curvatures of this embodiment will readily be understood as marked within FIG. 9.

Thus, as demonstrated by the various configurations illustrated in FIGS. 3A-8B, particular embodiments of the drip edge systems disclosed herein may include any combination of the advantages of individual features and/or combinations of features depicted and described without departing from the spirit or scope of the present disclosure.

Certain features that are described in this disclosure in the context of separate implementations can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations, one or more features from a claimed combination can, in some cases, be excised from the combination, and the combination may be claimed as any subcombination or variation of any subcombination.

Moreover, while methods may be depicted in the drawings or described in the specification in a particular order, such methods need not be performed in the particular order shown or in sequential order, and that all methods need not be performed, to achieve desirable results. Other methods that are not depicted or described can be incorporated in the example methods and processes. For example, one or more additional methods can be performed before, after, simultaneously, or between any of the described methods. Further, the methods may be rearranged or reordered in other implementations. Also, the separation of various system components in the implementations described above should not be understood as requiring such separation in all implementations, and it should be understood that the described components and systems can generally be integrated together in a single product or packaged into multiple products. Additionally, other implementations are within the scope of this disclosure.

Conditional language, such as “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include or do not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements, and/or steps are in any way required for one or more embodiments.

Conjunctive language such as the phrase “at least one of X, Y, and Z,” unless specifically stated otherwise, is otherwise understood with the context as used in general to convey that an item, term, etc. may be either X, Y, or Z. Thus, such conjunctive language is not generally intended to imply that certain embodiments require the presence of at least one of X, at least one of Y, and at least one of Z.

Although making and using various embodiments are discussed in detail below, it should be appreciated that the description provides many inventive concepts that may be embodied in a wide variety of contexts. The specific aspects and embodiments discussed herein are merely illustrative of ways to make and use the systems and methods disclosed herein and do not limit the scope of the disclosure. The systems and methods described herein may be used for treatment of process water from cementitious and/or fiber cement building articles and are described herein with reference to this application. However, it will be appreciated that the disclosure is not limited to this particular field of use.

Some embodiments have been described in connection with the accompanying drawings. The figures are drawn to scale, but such scale should not be limiting, since dimensions and proportions other than what are shown are contemplated and are within the scope of the disclosed inventions. Distances, angles, etc. are merely illustrative and do not necessarily bear an exact relationship to actual dimensions and layout of the devices illustrated. Components can be added, removed, and/or rearranged. Further, the disclosure herein of any particular feature, aspect, method, property, characteristic, quality, attribute, element, or the like in connection with various embodiments can be used in all other embodiments set forth herein. Additionally, it will be recognized that any methods described herein may be practiced using any device suitable for performing the recited steps.

While a number of embodiments and variations thereof have been described in detail, other modifications and methods of using the same will be apparent to those of skill in the art. Accordingly, it should be understood that various applications, modifications, materials, and substitutions can be made of equivalents without departing from the unique and inventive disclosure herein or the scope of the claims. 

What is claimed is:
 1. A drip edge configured to be installed to a substantially planar roof substrate comprising an upper surface and a side-facing surface, the drip edge comprising: a tail extending along the length of the drip edge, the tail comprising a lower end and an upper end thinner than the lower end, wherein the drip edge is coupleable to the upper surface of the roof substrate by driving one or more mechanical fasteners through the upper end of the tail such that the tail lies adjacent to the upper surface of the roof substrate; and an outer section contiguous with the tail at a lengthwise joint defining a roof angle corresponding to a roof pitch of the roof substrate, the outer section extending along the length of the drip edge and comprising an inner footing disposed proximal to the tail section, an outer footing disposed distal from the tail section, and a bridging member disposed between the inner footing and the outer footing such that the inner footing and the outer footing extend perpendicularly from a bottom side of the bridging member to form downward-facing c-shaped channel, wherein the joint comprises a bendably thin region disposed proximate the inner footing and the tail such that the roof angle is selectable by bending the tail relative to the bridging member along the bendably thin region, and wherein an inner surface of the inner footing lies adjacent to the side-facing surface of the roof substrate, wherein the c-shaped channel is sized and shaped to accommodate installation of a fascia board having a substantially rectangular cross-section disposed at least partially within the c-shaped channel and fastened to the side-facing surface of the roof substrate, and wherein the tail is configured to accommodate installation of a roofing material coupled to the upper surface of the roof substrate wherein at least a portion of the roofing material lies adjacent to the upper surface and at least a portion of the roofing material lies adjacent to the tail of the drip edge such that at least a portion of the tail of the drip edge is disposed between the upper surface of the roof substrate and an underside of the roofing material.
 2. The drip edge of claim 1, wherein the outer footing of the drip edge comprises a top end contiguous with the bridging member and a bottom end opposite the top end, the bottom end comprising a lip extending outwardly at an angle of between 15 degrees and 60 degrees relative to the outer footing such that a liquid flowing downward along the outer footing is directed away from the fascia board.
 3. The drip edge of claim 1, wherein the drip edge comprises a plurality of adjacent discrete drip edge sections having substantially identical cross sections, the drip edge sections disposed adjacently to form a drip edge extending along substantially the entire length of roof substrate.
 4. The drip edge of claim 1, wherein the c-shaped channel has a width of between 0.75 inch and 1 inch.
 5. A universal drip edge comprising: a tail extending along the length of the drip edge, the tail comprising a lower end and an upper end thinner than the lower end; and an outer section contiguous with the tail at a lengthwise joint defining a roof angle, the outer section extending along the length of the drip edge and comprising: an inner footing disposed proximal to the tail section; an outer footing disposed distal from the tail section; and a bridging member disposed between the inner footing and the outer footing such that the inner footing and the outer footing extend perpendicularly from a bottom side of the bridging member; wherein the joint comprises a bendably thin region disposed proximate the inner footing and the tail, wherein the roof angle is selectable by bending the tail relative to the bridging member along the bendably thin region; wherein the inner footing comprises an inner surface proximate the tail, the inner surface configured to be placed against an end surface of a roof substrate to define a drip edge installation position; and wherein the bridging member, the inner footing, and the outer footing define a downward-facing channel configured to receive and partially surround a fascia board.
 6. The drip edge of claim 1, wherein the bridging member is oriented at an angle between 5 degrees and 30 degrees relative to the tail section.
 7. The drip edge of claim 1, wherein the bendably thin region comprises a lengthwise divot in a bottom surface of the joint.
 8. The drip edge of claim 1, wherein the upper end of the tail is configured to receive one or more mechanical fasteners for securing the drip edge to a roof substrate.
 9. The drip edge of claim 1, wherein the outer footing comprises a top end contiguous with the bridging member and a bottom end opposite the top end, the bottom end comprising a lip disposed at an angle relative to the outer footing.
 10. The drip edge of claim 9, wherein the lip is disposed at an angle between 15 degrees and 60 degrees relative to the outer footing.
 11. The drip edge of claim 9, wherein the bottom end terminates in a fillet, wherein an outer portion of the fillet has a radius of curvature larger than a radius of curvature of an inner portion of the fillet.
 12. The drip edge of claim 1, wherein the outer section and the tail comprise aluminum.
 13. The drip edge of claim 12, wherein the outer section and the tail are manufactured by extruding to form an integral drip edge system.
 14. The drip edge of claim 1, wherein the outer footing is configured to accommodate and direct a flow of water received from a roof
 15. The drip edge of claim 1, wherein the inner footing, the outer footing, the bridging member, and the lower section of the tail have a thickness between 1/32 inch and ⅛ inch.
 16. A method of installing a drip edge on a roof substrate, the method comprising: providing a drip edge comprising a tail and an outer section having an inner footing, an outer footing, and a channel disposed between the inner footing and the outer footing; placing the drip edge against the roof substrate such that a bottom surface of the tail is adjacent and substantially parallel to an upper surface of the roof substrate and an inward-facing surface of the inner footing abuts a side-facing surface of the roof substrate; attaching the tail to the roof substrate by placing one or more mechanical fasteners through the tail and a portion of the roof substrate; and installing a fascia board within the channel.
 17. The method of claim 16, wherein the tail and the outer section of the drip edge are contiguous at a joint having an angle adjustable by bending.
 18. The method of claim 17, further comprising determining a pitch of the roof substrate, and adjusting the angle of the joint based on the measured pitch before placing the drip edge against the roof substrate.
 19. The method of claim 16, wherein the roof substrate comprises a roof sheathing.
 20. The method of claim 16, wherein attaching the tail to the roof substrate comprises driving one or more nails through the tail and a portion of the roof substrate. 